I wouldn't class myself as one of those with a good knowledge, but I do have a few Mdina pieces. The plastic label (or that is what it looks like - sorry if I am wrong ) - indicates a more recent piece, I'd guess the other markings are dates - December 2001 and November 2006 maybe? but pure speculation. I have a gorgeous red piece dated to the base in that way from 2000.

Hi Keith,I took the liberty of asking Mdina Glass about your the codes on your weights. Apparently, the codes refer to the shape and also the colour. I gather the year is normally marked underneath the codes, however, looks like the year was not marked on your weights from looking at the pics.